level 2 unit 9 auidoVersión en línea level 2 unit 9 auido por English Laboratory 1 What topic do they talk about? a Population b Environment 2 Is the change for better or worse? a Better b Worse 3 What topic do they talk about? a transportation b cities 4 Is the change for better or worse? a Better b Worse 5 What topic do they talk about? a families b shopping 6 Is the change for better or worse? a Better b Worse